When a Nested Timeline is created the performance is very slow if the Project Media Window is active.
In the video below there are 4 nested timeline in the Project: (Cam_01, Cam_02, Cam_03 and Cam_04). Using the Open Nested Timeline button and returning to the main project or minimizing the main project and restoring causes performance to be very slow and the project to take a long time to respond.
If the Project Media Window is disabled, performance returns to normal.
Anyone else confirm this problem?